Psychiatrist | Addiction Psychiatry

Dr. William Roy Mains, M.D.

7200 Bancroft Ave, Suite 133, Oakland, California, 94605-2403

About Dr. William Roy Mains

Dr. William Roy Mains is a psychiatrist based in Oakland, California who is specialized in Addiction Psychiatry. Active license number of Dr. William Roy Mains is A65356 for Addiction Psychiatry in California. His current practice location is 7200 Bancroft Ave, Suite 133, Oakland. Patients can contact him at 510-553-8500 or can fax him at 510-553-8550. Dr. William Roy Mains, M.D., specializes in Addiction Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1477751741.

Dr. William Roy Mains focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.

Practice Information

Dr. William Roy Mains's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. William Roy Mains
Specialization Addiction Psychiatry
Credentials M.D.
Gender Male
Practice Address: 7200 Bancroft Ave, Suite 133
Oakland, CA - 94605-2403
Fax 510-553-8550

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1477751741
NPI Enumeration Date: 06 Jul, 2007
NPI Last Update On: 07 Jan, 2010

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dr. William Roy Mains are as mentioned below.

License NumberSpecializationStateStatus
A65356Addiction Psychiatry CaliforniaPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. William Roy Mains
7200 Bancroft Ave, Suite 133
Oakland, CA - 94605-2403
Phone: 510-553-8500
Fax: 510-553-8550

Book an Appointment with Dr. William Roy Mains

To schedule an appointment, contact Dr. William Roy Mains at 7200 Bancroft Ave, Suite 133, Oakland, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. William Roy Mains:

Dr. William Roy Mains is a psychiatrist specializing in Addiction Psychiatry. He focuses on evaluation and treatment of individuals with alcohol, drug, or other substance-related disorders, and of individuals with dual diagnosis of substance-related and other psychiatric disorders.

Yes, Dr. William Roy Mains is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dr. William Roy Mains practices at 7200 Bancroft Ave, Suite 133, Oakland, California, 94605-2403.

To schedule an appointment with Dr. William Roy Mains, please contact the office at 510-553-8500.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.